| 正态应力和疲劳强度结构可靠性的参数估计 |
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| 引用本文： | 孙祝岭,陈婧姝.正态应力和疲劳强度结构可靠性的参数估计[J].强度与环境,2012(5):50-54. |
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| 作者姓名： | 孙祝岭 陈婧姝 |
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| 作者单位： | 上海交通大学,上海 200240 |
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| 摘 要： | 结构可靠性的参数估计是机械可靠性的主要问题之一。强度和应力分别为疲劳寿命变量和正态变量的结构模式是一种较常见的模式。研究这一模式结构可靠性的参数估计问题，给出了疲劳强度和正态应力的两个分布中一个分布参数已知另一个分布参数未知时，结构可靠性的点估计和近似区间估计方法，并用MonteCarlo方法对近似区间估计的可靠性进行了模拟研究。
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| 关 键 词： | 结构可靠性 强度 应力 疲劳寿命分布 正态分布 参数估计 |
The parameter estimation of structural reliability for normal stress and Birnbaum-Saunders strength |
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| SUN Zhuling,CHEN Jingshu.The parameter estimation of structural reliability for normal stress and Birnbaum-Saunders strength[J].Structure & Environment Engineering,2012(5):50-54. |
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| Authors: | SUN Zhuling CHEN Jingshu |
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| Institution: | (Shanghai Jiaotong University, Shanghai 200240, China) |
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| Abstract: | The estimation of structural reliability is one of the main problems about mechanical reliability. The structural model, in which strength follows the Bimbaum-Saunders distribution and stress is a normal variable, is quite common. The research presented in this paper is point estimation and interval estimation of structural reliability in such model, when either the parameters of stress or those of strength are unknown. The proposed interval estimation method is evaluated by Monte-Carlo simulation. |
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| Keywords: | structural reliability strength stress Bimbaum-Saunders distribution normal distribution parameter estimation |
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